Which temp is more important, the CPU temp or the Core temp? On my rig the CPU temp seems to be always 5-6c higher than the Core temp, if the cores are themselves generating the heat, I don't understand how they can be cooler than the CPU overall.
It can depend on where the sensor is located, for example if the CPU temp is under the processor the heat may migrate to the bottom faster then it gets pulled off the top by the HSF. CPU temp is usually a good indicator of the over all temp of the chip while the core temps is the tempature of the cores themselves (or just next to the cores in the chip.) This is what I have read and have come to understand.